X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=xml-tree.hpp;h=4ada586c05b4b243bd3c82a9567937ada66fae01;hb=daf6549ca274aaa8d9c0b3964c5502f0f0f08d7d;hp=68e5f36a5dda8f633d841597a196657ead9071af;hpb=d597939d7fe3532ba98d21045dbb0dbbb4302b2c;p=SXSI%2FXMLTree.git diff --git a/xml-tree.hpp b/xml-tree.hpp index 68e5f36..4ada586 100644 --- a/xml-tree.hpp +++ b/xml-tree.hpp @@ -95,21 +95,95 @@ public: //Node_T tests + /** + * [is_leaf(n)] returns true if [n] is a leaf (i.e. if [num_children(n)] + * returns 0 + * Runs in O(1) + */ inline bool is_leaf(node_t) const; + + /** + * [is_ancestor(n, m)] returns true if [n] is an ancestor of [m], false + * otherwise + * Runs in O(1) + */ inline bool is_ancestor(node_t, node_t) const; + + /** + * [is_right_descendant(n, m)] returns true if [m] is a descendant-or-self of + * a following-sibling of [n], false otherwise + * Runs in O(1) + */ inline bool is_right_descendant(node_t, node_t) const; + + /** + * [is_child(n, m)] returns true if [m] is a child of [n] + * Runs in O(1) + */ bool is_child(node_t, node_t) const; + + /** + * [is_first_child(n, m)] returns true if [m] is the first child of [n] + * Runs in O(1) + */ inline bool is_first_child(node_t) const; + + /** + * [is_nil(n)] returns true if [n] is equal to xml_tree::NIL + * Runs in O(1) + */ inline bool is_nil(node_t) const; + + /** + * [is_open(n)] returns true if [n], seen as an index in the + * underlying BP representation corresponds to an opening parenthesis. + * Runs in O(1) + */ inline bool is_open(node_t) const; + //Numbering functions + /** + * [depth(n)] returns the depths of node [n]. The root has depth 1. + * Runs in O(1) + */ uint32_t depth(node_t) const; + + /** + * [preorder(n)] returns the preorder of node [n]. Equivalent to calling + * rank on the underlying BP representation. + * Runs in O(1) + */ uint32_t preorder(node_t) const; + + /** + * [preorder(n)] returns the postorder of node [n]. + * Runs in O(1) + */ uint32_t postorder(node_t) const; //Tag functions + /** + * [tag(n)] returns the tag of node [n] which must be a valid node identifier + * (in particular not NIL) + * Runs in O(1) + */ inline tag_t tag(node_t) const; + + /** + * [get_tag_name_by_ref(t)] returns the string representation of tag [t] + * For elements, the string representation is the tag name itself + * Returns if [t] is not a proper tag identifier. + * Runs in O(1) + */ const char* get_tag_name_by_ref(tag_t) const; + + /** + * [register_tag(s)] returns the tag identifier for the tag represented + * by the string [s]. If no such tag exists in the document, return a + * fresh tag identifier [i]. Subsequent calls with the same [s] will return + * the same identifier. + * Runs in O(1) + */ tag_t register_tag(char *s); //Navigation functions